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Narrow band absorbing silver/titanium dioxide thin film holographic material and its preparation method and application

A technology of titanium dioxide and holographic materials, which is applied in the field of preparation of optical information storage materials, can solve the problems that precious metal nanoparticles are difficult to obtain, and achieve the effects of strong narrow-band absorption, efficient holographic storage, and color reproduction

Active Publication Date: 2019-01-11
NORTHEAST NORMAL UNIVERSITY
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Problems solved by technology

Although the ultraviolet reduction method, mesoporous template method and sol-gel method have been widely used, noble metal nanoparticles with uniform size are still difficult to obtain, and noble metal nanoparticles with uniform size are very important for the application of plasmonics in light energy conversion. very important

Method used

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  • Narrow band absorbing silver/titanium dioxide thin film holographic material and its preparation method and application
  • Narrow band absorbing silver/titanium dioxide thin film holographic material and its preparation method and application
  • Narrow band absorbing silver/titanium dioxide thin film holographic material and its preparation method and application

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Embodiment Construction

[0054]The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0055] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0056] according to figure 1 The flow chart is shown for the preparation of silver / titanium dioxide thin film holographic materials.

[0057] Step 1. Preparation of titanium dioxide thin film

[0058] TiO 2 Put 10mL stock solution of the sol and 20mL purified water into a beaker, and magnetically stir until evenly mixed to prepare a titanium dioxide solution. Take P 123 (PEO 20 -PPO 70 -PEO 20 ) Put 1.6g of solidified block copolymer into another beaker, add 15mL of pure water, and magnetically stir for a long time (about 2h) until it is uniformly dissolved and becomes a liquid state, and thus a pore-forming agent solution is obtained. Mix the titanium dioxide solution and the pore-forming agent solution, stir magneticall...

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Abstract

The invention discloses a narrow-band-absorption silver / titanium dioxide film holographic material and its preparation method and application. In absence of light, titanium dioxide film is dipped in tannin solution to obtain tannin attached titanium dioxide film; in absence of light, the tannin attached titanium dioxide film is dipped in silver nitrate solution, and is soaked in water bath at thetemperature of 30 DEG C for 10 minutes so as to obtain silver / titanium dioxide film; in radiation of visible laser, the silver / titanium dioxide film is dipped in silver nitrate solution to obtain laser and tannin co-acted silver / titanium dioxide film, namely the silver / titanium dioxide film holographic material. The holographic material refers to the silver / titanium dioxide film material, effective narrow-band absorption of silver nano-particle plasmas can be achieved under coaction of visible laser and tannin rapidly, so as to realize rapid and effective holographic optical storage via shortwave. Besides, chromatic information is divided by polarization passages, thereby realizing reproduction of colored holographic images.

Description

technical field [0001] The invention relates to a narrow-band absorbing silver / titanium dioxide thin film holographic material, a preparation method and an application thereof, and belongs to the field of preparation of optical information storage materials. Background technique [0002] The efficient utilization of energy is the key problem to be solved at present. As an important energy source, the conversion of light energy has attracted extensive attention in the fields of photocatalysis, solar cells, biotechnology and data storage. In recent years, large-capacity optical storage has become an important requirement of information technology, which can be realized through holographic technology. Improving the rate and efficiency of holographic storage has always been a hot issue in applications, which can be achieved by optimizing the absorption properties of recording media. Noble metal nanoparticles have been used as efficient photoelectric conversion media due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/44G11B7/24044G11B7/2433G11B7/2437
CPCC23C18/166C23C18/1667C23C18/44G11B7/24044G11B7/2433G11B7/2437G11B2007/24308
Inventor 付申成王欣浓张昕彤刘益春
Owner NORTHEAST NORMAL UNIVERSITY
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